Tie plate interlocking two-way rail anchor



Aug. 3, 1943. P. H. QHAMILITON I 5, 1

TIE PLATE INTERLOGKING .TWO-WAY RAIL ANCHOR Filed May .21, 1942 2 sheets-sheet 1 I INVENTOR.

Partly Ham/Hon 1943. P. H. HAMILTON 2,325,851

TIE PLATE INTERLOCKING TWO-WAY RAIL ANCHOR Filed May 21, 1942 ZSheets-Sheet 2 I INVENTOR. 'Pe my H Ham/H1311 W flfforna s en onto the rail flange.

apart a distance less than the plate so that it is normally necessary to flex the outer the said lower jaws force their tions into firm resilient grip with'the forward and rear edges, respectively, of the tie plate.

, spaced locations 21-2la.

; zontal position with tom surface of the V of the upper jaws relative to the lower jaws exert of the lower jaws. The said upper jaws are also spaced vertically from the lower jaws a distance less than the vertical thickness of the rail base flange. Consequently the upper and lower jaws are spread apart slightly when the anchor is driv- By reason of the offset relation of the upper and lowerjaws, the upward pressure on the movement upwardly on said inclined top surface of the rail flange, tends to turn or'cant the U- shaped jaw portions about horizontal axes extending transversely of the rail and thereby presses the lower jaws l9-li9a, particularly that r 1 portion thereof adjacent the edges of the rail, into increased clamping engagementjwith the of the tie-plate. v

forward and rear edge portions In addition to the above resilient clampingac tion exerted by the jaws Iii-49a on the tie plate by reason of the turning movement of the jaws,

the ends of the lower jaws areprelerably spaced width of the tie ends of the lower'jaws apart'when forcing the anchor to its applied position. The reflex of outer endpor- The said outer ends of said'lower jaws are pre erably turned outwardly, as shownat 24 -2421, to

123 in Fig. 3, and thereby efiect interlocking-engager'nent of the anchor device and the" tie plate.

In applying the anchor to it's operative 'posi tion on the rail, thecarn'surfa'ces 25"- 25aj of the angular ends 2 3'',24a"are first forced over opposite' edges of the tie-plate,' as shown" in dotted position inFig. 1. The anchor device isthen lowered from the dotted line position to the hori- ,a downward and outward turning movement. Atthe same time the lower the rail base. 5 Engagement jaws are forced along one frontand'rearedges of 1 the tie-plate beneath of the upper jaws on the inclined face'of the rail base flange tends to press theflower 'jaws'into surfaces 235-230 during their The said lower jaws 36, therefore, bear throughout their length against the opposite edges of the tie-plate. In other respects, the modified anchor device may be, an preferably is, the same as previously described in connection with Figs. 1 to 4 inclusive.

While thisinvention is illustrated in two specific embodiments it will be obvious to those familiar with the art that other modifications in structure might be made without material previous embodiment.

' departure from the terms or spirit of the inven- 1: tion' described herein.

' vertical alignment each other,

I claim: 1. A rail anchor for resisting longitudinal creeping-of arailroad rail in either direction comprising -a'bar*bent at opposite ends to form U-shaped portions extending transversely of the bar and defining" upper and lower jaws adapted tobe driven into spring grip-ping engagement with the topand bottom surfaces of a rail base flange andto'abut against the forward and rear faces of a' rail supporting structure; the said uppenand lower jaws being arranged out of whereby the applying movement of said upper jaws on the inclined surface er a rail base flange tends to move 'the'lower jaws toward said-supporting structureand exerts'a resilient clamping action of said lower jaws on the said forwardand rear races of'the sa'idsupporting structure. A

' 2. 'A* !9. l1 "anchor for resisting longitudinal creepingof 'a railr'odrail in either direction comprising a bar bentat opposite ends to form U-sha'pe'd'portions extending transversely of the v vertical rubbing engagement with the edges of the bar and defining upper and lowe'r jaws adapted to be driven into spring gripping engagement with the top and bottom surfaces of a railbase flange and to abut against the forward and rear facesiof a tie plate on which the rail is supported, the length of the lower jaws being less than the width of the rail base and theupper and lower jaws being arranged out of vertical align- :ment with each other whereby the applying movement of saidupper jaws on the inclined surface of'arail base flange tends to move the lower jaws toward said supporting structure and exert a resilient clamping action of said lower jaws on the said forward and rear faces ofthe railsupporting structure. V

3. A rail anchor. for resisting longitudinal creeping .movementsof. a railroad-rail in either direction comprisin bar bentat opposite ends ;to form U shap8,,d portions extending transversely ,of the -bar and defining upper and lower firm spring gripping engagement with the botrail base. The offset relation a turning movement onthe jaw portionstending to increase the resilient clamping action of-the lower jaws'on the. front and rear edge portions When the anchor has. been of the tie plate.

driven to its final position, thegvrshaped, portions 21a of thelower jaws, together with. the bearing surfaces-217+?! exert a resilient clamping action on the tie plate to prevent the rail anchor device from backing off the rail.

,Referring now to :the embodiment shown in Fig. 5: The anchor device shown in this figure is the'same as the previous device except that the lower jaws designated '30 in this figure are not bowed lengthwise of the rail, assho'wnin-the I the rail. I

: jaws adapted to'be driven; into spring gripping engagement with thetop and bottom surfaces of a railbase flange and toabutagainst the forward and rear faces of a tie plate on which the rail is supportechthe lower jaws being of a length less than thewldthof the base portion of the rail and having a resilient clamping engagement {with the said forward and rear edge portions of' the plate tohold the device frorn backing off :4. A rail anchor for resisting longitudinal creepingjof a railroad rail in either direction comprising a bar bent at'opposite ends to'form U-shaped portions extending transversely ofjthe barand defining upper and lower jaws adapted to be driven into spring gripping engagement with the topand bottomsurfaces ofa rail base'fiange and to 'abutaga'inst'the forward and-rear edge portions of a tie plate on which the rail is-sup- 'ported,-theflower-jaws being bowed'lengthwise of the rail to provide tie-plate engaging-surfaces jaws being normally positioned, whereby it is necessary to spread them apart to ap ly them over the opposite edges of the tie plate and whereby reflex of said jaws exerts a strong spring grip on said forward and rearedge portions ofv from backing ofi p r tie with the notched edge of the plate extending the tie plate to hold the device the rail.

'5. A rail anchor for resisting longitudinal creeping of a railroad rail in either direction comprising-a bar bent at opposite ends to form U-shaped portions extending transversely of the f bar and defining upper and lower jaws adapted to be driven into sprin gripping engagement with the top and bottom surfaces of a rail base flange and to abut againstthe forward and rear edge portions of a tie'plate on which the rail is supported, the lower jaws beingof a length less than the width of the base portion of the rail and normally spaced apart a distance less than the width of the tie plate,"whereby it is necessary to spread them apart to apply them over the opposite edges of the tie plate and whereby the reflex of said jaws exerts a strong gripping action on the forward and rear edge portions of the tie plate, and the said upper and lower jaws being arranged out ofvertical alignment with each other, whereby the applying movement of the upper jaws on the inclined surface of the rail base flange so tensions the anchor as toincrease the resilient clamping c engagement of said lower jaws on the tieplate.

6. A rail anchor for resisting longitudinal creeping of a railroad rail in either direction J1 spaced apart for gripping one flange only of arail c 1b'aseat locations adjacenttheforward and rear comprising a bar intermediately bowed upwardly V and provided at opposite endsfwith -.U-shaped portions defining upper and lower jaws adapted to be driven transversely ofa rail into spring clamping engagement with the top'and bottom surfaces of the rail base flange, and the/lower jaws being of lengths less than the width of the rail base and flexed apart lengthwise of the rail into spring clamping engagement with the forward and rear edge portions of the tie plate.

7; A rail anchor for resisting longitudinal creeping of a railroad rail in either direction comprising a bar provided at opposite ends with U'-. V

shaped portions defining upper and lowerjaws adapted to be driven transversely of acrail into spring clamping engagement with the top and:

bottom surfaces of the rail base flange; the lower jaws being of lengths less than the width of the notch in a vertical edge thereof and interposed between a railroad railand an underlying crosstransversely of the rail, of a rail clamping device formed with pairs of'upper and lower spring jaws I edge portions of the plate, the length of said lower jaws being less thanthe width of 'the rail base andpne of saidlower jaws being formed with a portion extending into said notchfofthe I plate to, provide an interlocking engagement" therewith. t V

9. In combination with a tie plate interposed "between the railroad rail and an underlying crosstie and having a notch in each ofits forward and rear edges, 'of a rail clamping device, formed with 7 pairs of upper and lower jaw portionsadapted to. grip the top and bottoms'urfaces of a rail base flange with spring pressure at locations adjacent the forward and rear edge portions of said. tie plate, the ends of said lower jaws being normally [spaced aparta distance less than th width of the tie plate and formed withangularly disposed portions providin camsurfaces adapted to, enf- V I gage the opposite edgesofthe tie plate to force said lower jaws apart during the initial applying movement of the clamp device and provided also terlocking engagement,

with means fitting in said notchestoform mm:

10. In combination with, a tie plate having 7 notched forward andrear edges and interposed 1- V between the base portionof a rail and an under; lying cross-tie, of a one-piece rail clamping device" for gripping one flange only of the rail base com- Y prising a bar formed at opposite ends with U-' shaped portions defining'uppervand lower resilient jaws adapted to be driven transversely of v the rail into spring gripping engagement with i the top and bottom surfaces of saidbase flange and the said lower jawsbeing flexed apartlengthwise of thevrail andhavingmeans held bythe reflex pressure of said lower jaws in interlocking engagement with said notches. I

' PERRY 'H. 'HAMrLTon;

rail base and positioned to bear throughout their length with a resilient clamping pressure against a I the forward and rear edges of the tie plate to 

